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企業資質

鶴壁市華屹礦山機械設備有限公司

商盟會員2
|
企業等級:商盟會員
經營模式:經銷批發
所在地區:河南 鶴壁
聯系賣家:朱總
手機號碼:13839225118
公司官網:hbhyks.tz1288.com
企業地址:河南省鶴壁市山城區石林鎮
本企業已通過工商資料核驗!
企業概況

鶴壁市華屹礦山機械設備有限公司,歷經拼搏與發展,現有員工100余人,注冊資金200萬元,是一家專注于礦用提升絞車、礦井提升機及配件系列產品、銷售的民營礦山機械企業。公司銷售部門分為國內銷售處和國際貿易部,國內銷售處遍布各地,主要有黑龍江哈爾濱,河北唐山,新疆烏魯木齊,內蒙古呼和浩特,貴州六盤水,江西......

二手變頻絞車-鶴壁華屹礦用絞車-二手變頻絞車報價

產品編號:1000000000011761282                    更新時間:2022-04-28
價格: 來電議定
鶴壁市華屹礦山機械設備有限公司

鶴壁市華屹礦山機械設備有限公司

  • 主營業務:礦用提升絞車,變頻絞車,絞車配件,井架,天輪,變頻電控
  • 公司官網:hbhyks.tz1288.com
  • 公司地址:河南省鶴壁市山城區石林鎮

聯系人名片:

朱總 13839225118

聯系時務必告知是在"產品網"看到的

產品詳情









變頻絞車在礦井提升中的問題解決措施


  隨著變頻器不斷發 展和應用,變頻絞車也在煤礦系統中得到推廣應用,變頻絞車能夠實現無級調速、降低能耗、故障少、維護方便等良好效 果,使煤礦絞車系統邁上了一個新的臺階。

一、變頻器的工作原理 :異步電動機的轉速 式中:n——異步電動機的轉速f——異步電 動機的頻率 s——電動機轉差率 電動機極對數上式可知,轉速 改變就能改變電動機的轉速,當頻率 50Hz的范圍內變化時,電 動機轉速調節范圍很廣。變頻器是通過將電動機電源頻率改變 達到速度調節的,是一種、的調速方法。通過將 電機定子供電頻率改變來對電機的轉速進行控制是提高絞車系 統中變頻工作的主要原理?!敖弧薄弧弊冾l器 變頻器就是一個能夠任意將頻 率改變的交流電源?!敖弧?直—交”變頻器首先通過三相全波整流把交流電源整流為直 流,再通過開關元件把直流逆變為交流,達到控制輸出電源頻 率的目的。因為變頻器可以隨意控制電動機的頻率,所以能夠 實現電動機的正反轉,并且對電動機的負力運行、電氣制動、 動力制動及其實現二級制動等方面均能通過 PLC 程序及控制元 件來實現。 某煤礦用的變頻絞車控制系統框圖如圖 1,操作臺 PA 發出 操作指令信號,傳輸到 PLC,PLC 依據軸編碼器 PC1、PC2 饋制動LS 傳送的信號在內部比較,再通過軟件程序對變頻器 行啟動、停車、制動等操作進行控制。






3考慮鋼絲繩的斷面原則

根據鋼絲繩脛骨的斷面形太可分為圓股鋼絲繩和三角股鋼絲兩種。在選擇礦用提升機鋼絲繩的時候要參考提升機使用情況去具體分析

4礦井提升鋼絲繩結構影響

在鋼絲繩相同的下,絲數越多,鋼絲的就越細,這時鋼絲繩雖然柔軟一些,但是不耐磨,所以在立井提升中,應多采用6股19絲或6股37絲。斜井提升由于鋼絲繩的輥筒摩擦加重了磨損,因此鋼絲直徑應該選擇粗一些的。

5礦井提升機性能

專門用于提升人員或人員與物料混合提升應選用韌性為特號的鋼絲繩。不旋轉鋼絲繩,由于其受載荷后不旋轉且不打結,可用用作多繩摩擦提升中的尾繩。密封鋼絲繩的優點是耐磨,表面光滑,但比一般繩稍硬一點。所以多用于鋼絲繩罐道。扁鋼絲繩是由于手工編制而成,生產能力,價格貴,但受載荷后不扭轉不打結,抗橫向振動強,運行平穩可靠,所以適用于多繩摩擦提升的尾繩。




3安全回路聯鎖保護裝置   

(1)主令控制器LK-1零位聯鎖保護   無論可編程電控系統主令控制器采用霍爾傳感器式還是軸編碼器式,可編程控制器都應檢測到其零位信號,使得提升機在運行過程中LK-1斷開。安全回路動作后,操作手把必須***中間位置,使LK-1閉合,提升機才能二閃起動。   

(2)工作閘制動手把聯鎖保護   通常工作閘制手把聯鎖保護由行程開關獲得,行程開關接點應輸入至可編程控制器。工作閘制動手把位于制動位置時,行程開關觸點閉合,安全回路方可接通。一旦安全回路動作,只有工作閘制手把拉至制動位置后,安全回路方可復電。   

(3)加速接觸器與測速回路斷線聯鎖保護可編程提升電控中,無論轉子加速接觸器有無觸點,聯鎖保護均由電控系統中主控機和監控機內部程序實現,無需作用于外部安全回路。   

(4)制動油過壓保護   制動油過壓保護通常為保護液壓站而設,應設置為雙線制。一套由液壓站壓力傳感器傳遞數據于可編程控制器,程序內部作用于安全回路,另一路由液壓站接點壓力表接點信號獲取,直接串接聯于安全回路。制動油過壓保護設置為雙線制,即不增加電控成本,又互為備用,進一步提高保護裝置的可靠性。   

(5)低頻電源聯鎖保護   為保證提升機隨時都能夠產生電氣制動,低頻電源聯鎖保護通常設置為雙線制,一是低頻裝置饋電開關常開接點直接串接于外部安全回路,另一路為低頻裝置輸出端安裝一電壓互感器,提升機起動過程中,電控系統向低頻電源裝置傳遞瞬間觸發脈沖,同時電壓互感器向可編程控制器輸入電壓信號,檢測制動單元的可靠性,否則程序作用于內部安全回路跳閘。



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